玉軸受走路面の超仕上について

概要

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It is well known that the finishing condition of the race-surface of a roller bearing has a great effect upon the operation capacities of bearing and causes of noise and vibration thereof. In this study, the authors explain a method of applying super-finishing to the finish of the race surface and examine the results of the study. Conditions of the super-fiinishing work are as follows : 1. Frequency of vibration of grinder : 500 cycle/min〜1500 cycle/min. Amplitude of vibration : 2mm〜4mm. 2. Rotational speed of mechanism : 100〜300 r.p.m. 3. Pressur in working : 0.5kg〜1.8kg. 4. Quantity of grinding : 2μ〜10μ. These conditions are a little different according to the preceding process of the machining, but in general, it is considered better to adopt two stage work ; the first stage is the rough work in low speed and high presseur, and the second stage is the finishing work in high speed and low pressure. The grinders used are of 600 J and 800 I, and working time is about 1 min to 3.5 min. The result of testing the worked surface by the "Nikko profile meter" showed that a very smooth surface, where chatter-marks were completely removed, was obtained, and that noncrystalline layer was hardly seen.
社団法人日本機械学会の論文
1952-05-10